package org.jeecg.weixin.web.controller;

import org.jeecg.weixin.cp.bean.message.WxCpXmlMessage;
import org.jeecg.weixin.cp.bean.message.WxCpXmlOutMessage;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import org.jeecg.weixin.web.config.WxCpConfiguration;
import org.jeecg.weixin.web.utils.JsonUtils;
import org.jeecg.weixin.cp.api.WxCpService;
import org.jeecg.weixin.cp.util.crypto.WxCpCryptUtil;

/**
 * @author Binary Wang(https://github.com/binarywang)
 */
@RestController
@RequestMapping("/wx/cp/portal/{agentId}")
public class WxPortalController {
	private final Logger logger = LoggerFactory.getLogger(this.getClass());

	@GetMapping(produces = "text/plain;charset=utf-8")
	public String authGet(@PathVariable Integer agentId,
			@RequestParam(name = "msg_signature", required = false) String signature,
			@RequestParam(name = "timestamp", required = false) String timestamp,
			@RequestParam(name = "nonce", required = false) String nonce,
			@RequestParam(name = "echostr", required = false) String echostr) {
		this.logger.info("\n接收到来自微信服务器的认证消息：signature = [{}], timestamp = [{}], nonce = [{}], echostr = [{}]",
				signature, timestamp, nonce, echostr);

		if (StringUtils.isAnyBlank(signature, timestamp, nonce, echostr)) {
			throw new IllegalArgumentException("请求参数非法，请核实!");
		}

		final WxCpService wxCpService = WxCpConfiguration.getCpService(agentId);
		if (wxCpService == null) {
			throw new IllegalArgumentException(String.format("未找到对应agentId=[%d]的配置，请核实！", agentId));
		}

		if (wxCpService.checkSignature(signature, timestamp, nonce, echostr)) {
			return new WxCpCryptUtil(wxCpService.getWxCpConfigStorage()).decrypt(echostr);
		}

		return "非法请求";
	}

	@PostMapping(produces = "application/xml; charset=UTF-8")
	public String post(@PathVariable Integer agentId, @RequestBody String requestBody,
			@RequestParam("msg_signature") String signature, @RequestParam("timestamp") String timestamp,
			@RequestParam("nonce") String nonce) {
		this.logger.info("\n接收微信请求：[signature=[{}], timestamp=[{}], nonce=[{}], requestBody=[\n{}\n] ", signature,
				timestamp, nonce, requestBody);

		final WxCpService wxCpService = WxCpConfiguration.getCpService(agentId);
		WxCpXmlMessage inMessage = WxCpXmlMessage.fromEncryptedXml(requestBody, wxCpService.getWxCpConfigStorage(),
				timestamp, nonce, signature);
		this.logger.debug("\n消息解密后内容为：\n{} ", JsonUtils.toJson(inMessage));
		WxCpXmlOutMessage outMessage = this.route(agentId, inMessage);
		if (outMessage == null) {
			return "";
		}

		String out = outMessage.toEncryptedXml(wxCpService.getWxCpConfigStorage());
		this.logger.debug("\n组装回复信息：{}", out);
		return out;
	}

	private WxCpXmlOutMessage route(Integer agentId, WxCpXmlMessage message) {
		try {
			return WxCpConfiguration.getRouters().get(agentId).route(message);
		} catch (Exception e) {
			this.logger.error(e.getMessage(), e);
		}

		return null;
	}

}
